Ink-roller-driving mechanism for printing-presses.



PATENTED JAN. 16, 1906,

B. HALL. INK RoLLRR DRIVING MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED JUNE 14.1905.

I IINVENTU W UNITED STATESZATENT ornron BICKNELL HALL, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO THE HUBER-HODGMAN PRINTING PRESS COMPANY, OF TAUN- TON, MASSACHUSETTS.

/ Specification of Letters Patent.

Patented Jan. 16, 1906.

Application file June 14., 1905. Serial No. 265,138.

To all 11/71/0717 it may concern;

Be it known that I, BroKNELL HALL, a citizen of the United States, residing in Taunton, county of Bristol, and State of Massachusetts, have invented certain new and useful Improvements in Inl Roller-Driving Mechanism for Printing-Presses, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The invention relates to certain improvements in ink-roller-driving mechanism for printing-presses wherein two or more groups of inking-rollers are located at some distance apart and where it is desirable to drive one group from another group or from an independent driving member by means of connecting mechanism, the first group or driving member being driven directly from the reciprocating bed or some other moving part of the machine. In some types of bedandcylinder printing-presses the form ink-rollers are located near the center of the press and are driven from the bed by spurgears, and the ink-table or distributing inking rollers are located at one end of the press at some distance from the form-inking rollers and are driven from the formroller-driving mechanism by means of a belt or train of gearing. The belt is undesirable, because it is not a positive drive, and the train-of-gearing drive while positive is also undesirable, because it is expensive and inclined to be noisy.

The object of this invention is to positively and noiselessly drive the group of ink-table or distributing rollers from the group of form-rollers by means of connecting-rods cooperating with crank-pins carried by gears which are members of the gearing connected with each group of inking-rollers.

With this object in view the invention consists, broadly, in the connecting-rod drive between two groups of inking or similar rollers or between a group of inking or similar rollers and some moving member of the machine, as will be hereinafter described and then specifically pointed out in the claims here unto appended.

In the accompanying drawings, which form a part of this specification, and in which like characters of reference indicate like parts, Figure 1 is a side elevation with the roller-bearings omitted of so much of a printing-machine as is necessary to the understanding of the invention. Fig. 2 is a partsectional plan view on line Z Z, Fig. 1, illustrating certain details of the construction. Fig. 3 is a vertical cross-section of the machine on line X X, Fig. 1.

Referring to the drawings, which illustrate one embodiment of the invention, 1 indicates the frame of a printingpress, which may be of any usual or desired construction. The frame is provided with ways 2, which operate to support the reciprocating bed 3 of any usual or desired construction. The means for reciprocating the bed may be varied Within wide limits and is not shown.

The impression-cylinder 4 is mounted to rotate in suitable bearings 5, which are operated in any well-known manner to raise the impression-cylinder a little, so as to be out of contact with the form 6, carried by the bed 3, during the non-printing stroke of the bed and to hold it down in contact With the form 6 during the printing stroke.

In the printing-press illustrated in the drawings the impressioncylinder 4 rotates at uniform speed in the direction indicated by the arrow and makes one turn during the printing stroke of the bed and another turn during the non-printing stroke, and as the operation of the impressiomcylinder and bed is the same as in any two-revolution bed-andcylinder printing-press no further description is necessary.

The form-rollers 7 are carried in suitable bearings 8 on top of the frame 1 and are driven by frictional contact with the rollers 9 at the same surface speed as the form 6 and act in the usual manner to receive ink from the ink-table 10 and transfer it to the form 6. The rollers 9 are rotated by means of the spur-gears 11, which in turn mesh with the pinions 12, which in turn are driven by the spur-gear 13, which meshes with the spurgear 14, which in turn is driven by the spurgear 15. The spur-gear 15 is securely mounted on the outer end of the shaft 16, which is rotated by means of the spur-gear 17, which in turn meshes with the rack 18, fastened to the bed 3. It will thus be seen that as the bed reciprocates to and fro the train of connecting-gearing operates to drive the formrollers 7 at the same surface speed as the form in either direction.

The spur-gear 14 carries a crank-pin 19, which is fastened in the connecting-rod or yoke 20. The ink-table or distributing rollers 21 are driven at the same surface speed as the ink-table by frictional contact with the rollers 22, which carry spur-gears 23 and are driven by the train of gears 24, 25, and 26. The gear 26 is equipped with a crankpin 27, same as gear 14, said crank-pin being fastened in the connecting-rod or yoke at the opposite end from the crank-pin 19. The connecting-rods 20 are preferably'made in the form of a triangular frame, which carries at its lower corner crank-pin 28, which operates in an idler crank-arm 29, mounted to rotate on stud in the frame 1. The idler crank-arm 29 and the crank-pin 28, as will be readily understood, serve to do away with the possibility of dead-centers, so that when gear 14 is rotated in either direction it will, by means of the connecting-rod or yoke 20, rotate gear 26 in the same direction.

In some machines of this class the ink-table rollers are continuously driven in one direction, in which case it would be necessary that the driving member be one that is continuously driven in one direction.

It will now be readily understood from the foregoing description that I have provided a positive and noiseless connecting-rod drive which can be used to drive a group of inkingrollers from a driving source located at some distance from them.

While the construction that has been described is the preferred embodiment of the invention, it is to be understood that it is not tobe limited to such construction, but that many changes may be made therein without departing from the invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a roller-driving device for printingpresses, a driving member, a driven member, and an intermediate member or idler, a connecting-rod between the driving and driven members, and connecting-rods between the idler and each of the other members substantially as shown and described.

2. In a roller-driving device for printingpresses, a driving member, a driven member and an intermediate driven member or idler, crank-pins and connecting-rods operatively connected with said members substantially as shown and described.

3. In a printing-machine having groups of inking-rollers located some distance apart, a driving member connected with a driven member by means of a connecting-rod and cranlepins, and a second driven member or idler connected with said driving and driven members by means of connecting-rods and crank-pins, said second driven member being so located in relation to the said driving and driven member as to prevent any dead-center in the operation of the mechanism.

4. A rollerdriving device for printingpresses, consisting of the following instrumentalities, a connecting-rod or yoke operating in connection with three crank-pins which are respectively carried by a driving member, a driven member and a driven idler member, together with suitable gearing substantially as shown.

5. In a roller-driving device for printingpresses, the combination of the rollers, a driving crank member, a driven crank member, a second driven crank member or idler, a connecting-rod or yoke connecting all three of the said crank members, and su table gearing between the said driven crank member and the rollers, substantially as shown.

6. In a roller-driving device for printingpresses, a crankwlriving member 14, con necting means between said crank-driving member and the reciprocating bed 3, a driven crank member 26, a driven crank member or idler 29, a connecting-rod or yoke 20, con neoting all three of the said crank members, and suitable gearing between the driven crank member 26 and the rollers 21.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

BICKNELL HALL.

Witnesses:

WILLIs K. HODGMAN, FREDK. M. Arwoon. 

